208 THE ENTOMOLOGIST. 
information regarding the larva; none of the natives knew it, 
but last monsoon I obtained it, and during June and July 
many were collected: they fed upon Aristolochia indica, and 
apparently upon it only. The larve were very splendid, of a 
rich velvety black, with a lateral band, and a saddle of white 
and red, very roughly tubercled, and the tubercles tipped with 
red. I cannot from memory attempt a closer description. A 
plate in ‘ Wood’s Natural History’ of the imago and larva of 
a species there given as Ornithoptera Amphrisius corresponds 
very closely with this Cochin species. But there seems some 
doubt about its identity. On July 19th, 1874, I obtained a 
large quantity both of larvae and pupe: the lareee I fed upon 
Aristolochia, and many changed to pupe. From these many 
emerged before I left India (August 13th), and others on 
board ship, from the pupz I took with me. They appear to 
remain about three weeks in pupa. The pupa possesses the 
power of making a curious noise, like ‘ pha, pha,’ and makes 
it very loudly when touched; the noise is accompanied 
(perhaps produced) by a sharp contraction of the abdominal 
segments. I thought at first it was merely produced by the 
rubbing of one ring of the pupa-case against the next, but 
the sound did not resemble a mere frictional sound; it was 
more like the sound of the rush of air through small holes,— 
‘pha, pha!’ I tried to produce it with a dead chrysalis, but 
failed; and the pupa sometimes contracted on being touched 
without making the noise, and appeared unable to make the 
noise until some time was given to allow them to recover 
their vigour. A curious incident connected with this insect 
came under my notice some years ago. In cleaning out the 
body of a female I turned out a mass of apparently mature 
eggs, but they all proved unfertile; soon after, in operating 
upon oe female, a slight pressure upon the body drove 
an egg out from the oviduct, and a repeated pressure extruded 
a second; the rest, twenty or thirty, would not come, and 
were taken out in emptying the body. The two which had 
been pressed through the oviduct hatched, and all the others 
shrivelled. { mention this as it seems a sort of confirmation 
of Von Siebold’s observation respecting bees, that the fertili- 
zation of the egg takes place on its passage through the 
oviduct. The two larve lived two or three days, refusing — 
every leaf I offered them. I did not then know Aristolochia — 
